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Re: [Qemu-block] [PATCH v3] block/vdi: Add locking for parallel requests

From: Kevin Wolf
Subject: Re: [Qemu-block] [PATCH v3] block/vdi: Add locking for parallel requests
Date: Wed, 4 Mar 2015 12:04:04 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

Am 27.02.2015 um 20:54 hat Max Reitz geschrieben:
> When allocating a new cluster, the first write to it must be the one
> doing the allocation, because that one pads its write request to the
> cluster size; if another write to that cluster is executed before it,
> that write will be overwritten due to the padding.
> See https://bugs.launchpad.net/qemu/+bug/1422307 for what can go wrong
> without this patch.
> Cc: qemu-stable <address@hidden>
> Signed-off-by: Max Reitz <address@hidden>
> ---
> v3: Hopefully finally found the real issue which causes the problems
>     described in the bug report; at least it sounds very reasonable and
>     I can no longer reproduce any of the issues described there.
>     Thank you, Paolo and Stefan!

Thanks, applied to the block branch.


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